I dare say it is not easy to write a biography about someone who at all costs want to keep their life as private as possible.

Of course there is always the ex-employees or ex-lovers who want to disclose something as subtle intimacies of people, especially when those people are part of the royalty. But still much remains without a concrete explanation, leaving for the assumption.

The book focuses on William's life. The second in succession to the English throne.

Notably one can not speak without quoting William's raising, his parents, Charles and Diana and quote means going back in time and try to understand the dynamics of the failure of a marriage that, for some time, was considered the wedding of the century.

There are many more books published telling Diana's side of story than Charles's. Besides that he has not given a million interviews talking about his personal life, like Diana did, in public and in secret, collaborating with calls "unauthorized biographies".

But what is known is that neither of them had a happy childhood. Charles being the son of the Queen of England, a woman who put their civic duties and her horses up own children. No display of affection in public and charges from all sides.

Diana came from a home where the parents verbally and physically assaulted, and when they finally divorced, the mother lost custody of the children (3 girls, with Diana, and a boy) because her own grandmother testified against daughter for finding a shame that she had separated from her husband.

Even before marrying, Diana had already developed bulimia disorder and hidden from everyone for years. And still suffered from postpartum depression and mania of persecution by not only the royal family, but everyone.

When her marriage to Charles no longer worked, even when they could not stay in the same room, Diana made the eldest son, a teenager, as her confidant of her misery and her lovers.

Created super protected and carrying a heavier load than it should, William had everything to become a man as cold as his father, or perhaps a scoundrel averse to compromise.

But one way or another, by one or another influence, he managed to break the curse. He married at the age that he wanted with the woman he chose and now await the birth of their first son, or daughter, for this week.

Yes, perhaps even show up early to say whether they are entitled to "happily ever after", but at least so far, what we see is that both he, as Kate, trying in every way to reconcile public as member of royalty, with the subtleties of life of an ordinary citizen. Even having to obey many protocols, time and again they are not ashamed to show in public how much they care to each other (unlike other royal couples of the same age of them): a touch of hands; a look.

The book is short, looking punctuate key moments that may have influenced the lives of all involved: grandparents, parents, and the couple in question.

A quick read for those who enjoy reading biographies, and a tribute, and why not say, seizing the opportunity, the new heir arrives.